Battle sign / Battle's sign

Battle sign refers to the post auricular ecchymosis that occurs following trauma to the middle cranial fossa of the skull. It may indicate underlying brain trauma.

The picture above shows one patient who came to the emergencies few hours after the head injury while in the one below it, patient was brought in a confused state few days after trauma to his head.

The sign was named after William Henry Battle, who was a English professor of surgery and pathology.

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Hypokalemia - Potassium replacement calculation

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Apgar scoring - table, mnemonic

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